mirror of https://github.com/searx/searx
68 lines
1.6 KiB
Python
68 lines
1.6 KiB
Python
# WolframAlpha (Maths)
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#
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# @website http://www.wolframalpha.com/
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# @provide-api yes (http://api.wolframalpha.com/v2/)
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#
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# @using-api no
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# @results HTML
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# @stable no
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# @parse answer
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from re import search
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from json import loads
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from urllib import urlencode
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# search-url
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url = 'http://www.wolframalpha.com/'
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search_url = url+'input/?{query}'
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search_query = ''
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# do search-request
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def request(query, params):
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params['url'] = search_url.format(query=urlencode({'i': query}))
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# used in response
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global search_query
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search_query = query
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return params
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# get response from search-request
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def response(resp):
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results = []
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webpage = resp.text
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line = None
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# the answer is inside a js function
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# answer can be located in different 'pods', although by default it should be in pod_0200
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possible_locations = ['pod_0200\.push(.*)\n',
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'pod_0100\.push(.*)\n']
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# get line that matches the pattern
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for pattern in possible_locations:
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try:
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line = search(pattern, webpage).group(1)
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break
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except AttributeError:
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continue
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if line:
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# extract answer from json
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answer = line[line.find('{'):line.rfind('}')+1]
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answer = loads(answer.encode('unicode-escape'))
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answer = answer['stringified'].decode('unicode-escape')
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results.append({'answer': answer})
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# failed result
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elif search('pfail', webpage):
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return results
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# append result
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results.append({'url': request(search_query, {})['url'],
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'title': search_query + ' - Wolfram|Alpha'})
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return results
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